Guard-bar.



M. F. WILLIAMM E. H. FRIOKEY.

GUARD BAR.

APPLIOATION FILED 0M 1, 1910.

1,001,108, Patntd Au 22, 1911..

Min/5556 'E-YH- FRI KAY.

rinrrnn srarns ra rnnr onrion.

MILTON' IE. WILLIAMS AND EDWARD H. FRICKEY, OF ST. LOUIS, MISSOURI, ASSIGNORS TO WILLIAMS PATENT CBUSHER AND PULVERIZER COMPANY, OF ST. LOUIS, MIS- SOUBI, A CORPORATION OF MISSOURI.

GUARD-BAR.

LOOLIOS.

Specification of Letters Patent.

Patented Au 22, 1911.

Original applicationfiled August 21, 1908, Serial No. 449,751 Divided and this application filed. October 1, 1910. Serial No. 584,929.

T '0 all whom it may concern:

Be it known that we, MILTON F, WIL- LIAMS and EDWARD H. FRIOKEY, both citi- Zens of the United States, residing at St. Louis, Missouri, have invented a certain new and useful Improvement in Guard-Bars, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a general view of our'improved device as applied to the feeding mechanism of a disintegrating machine. Fig. 2 is a detail perspective view of our device shown detached from the other parts of the ma.- chine.

The invention relates to an improvement in a support for a flexible conveyer or similar mechanism. When such a conveyer is mounted on sprocket wheels and engages the material to be fed the conveyer is likely to vibrate or be strained away from the material to such a degree that the feeding action is imperfect. It is our purpose to provide a track member to act as a back support for the continuous flexible conveyer to prevent the excessive movement of the conveying ele ments from the material to be actedupon.

'It is obvious that our improved'device may be used in many other connections with equal efficiency, as for example in connection with a chain drive or in connection with any analogous structure, wherein the flexibility of the part is necessary, but due to, the vibration set up in the movement of the part is liable to prevent the perfect operation of the flexible element.

This application is a division of an earlier application filed by us on feeding mechanism for disintegrating machine on August 21, 1908, Serial No. 449,751, to which reference may be made to any details of construction not fully set forth herein.

Referring to the drawings, 1 indicates generally a frame work supporting the feeding mechanism. In the machine of our prior application the feeding mechanism is comprised of two continuous conveying elements acting in cooperation with a set of feed rolls,

In Fig. 1 of the drawings we have indicated the lower conveyer as a belt 2 passing around support and feeding rolls 3 and 4, which are suitably mounted on the frame work 1. An upper conveyer consists of sprocket chains 5 provided with transversely extending slats or bars 6. The chains 5 of the upper conveyer pass over sprocket wheels 7 and 8, which are mounted on shafts 9 and 10, respectively. These shafts are carried by an oscillatory support or frame comprising inclined bars 11 arranged outside of the stationary frame work 1, and connected to pairs of rock-arms 12 and 13.

The rock-arms 13 which support the up per ends of the inclined bars 11 are pivotally connected at their lower ends to the stationary frame at 14, and the rock-arms 12 are pivoted to the lower ends of the inclined bars 11, and are connected to arms 15 on a rockshaft 16 which is journaled in bearings on the stationary frame 1, the parts 11, ,12 and 13 constituting an equalizing mechanism which insures parallelism between the vertically movable and immovable parts of the device,

The frame 1 is provided with guides 17 through which the arms 13 pass. These guides permit inward movement of the bars 11, and their carried parts to accommodate the vertical movement of the lower end of said bars connected to the shaft 16. The

inclined bars 11 are provided at their lower a shaft 19 of an upper feed roll 20 passes.

Mounted on the shaft 19 are boxes or bearings 21 that are vertically movable in slots 22 formed in a casing or stationary housing 23. The upper feed roll 20 is connected through means of an intermediate gear to a gear mounted on the shaft 9 to be rotated thereby. A lower feed roll is mounted on a shaft 24, and is connected through intermediate gears with the shaft 25 on which the roll or pulley 3 is mounted.

Pivoted at 26 on the frame work is a guard plate 27 adapted to be operated through connection with the shaft 19 to close the slot 22 as the bars 11 are moved upward.

So much of the structure as has already been described does not form the subject of our present invention, except as parts or elements of a machine upon which it is to be applied.

Our present improvement resides in a back a support 28 shown in Fig. 2. This member comprises a-track under which the lower series of slats of the upper conveyer may travel, so that it will be impossible for said series to yield or give when in contact with a hard or rigid piece of materialbeing fed to the disintegrating machine, without lifting the bars 11-. This member 28 is formed of a T or angle-iron with one of the flanges'cut away at either end and'the other flanges bent to form in one instance a support for a shaft bearing, and in the other instance the bearing itself.

In Fig. 2 it is clear that the flange 29 is cut away at bot-h ends and the flange 30 is bent at the right end in an S-shape forming an elongated slot 31, which flange may be reinforced by another strip of material as illustrated, if desired. At the opposite end i of the member the flange 30 is bent back The elongated slot 31 allows or permits of the adjustment or movement of the shaft 9 in said bearing relative to the shaft 10 which is useful in adjusting the tension of the sprocket chains of the'upper conveyer.

We are aware that minor changes may be made in the construction, arrangement and combination of the various elements described without departing from the. spirit of our invention, the scope of which is indij 7 cated by the accompanying claims.

WVe claim: 7

1. I11 a device of the character described,

a track member comprising a T-iron bent at one end to form a seat for a shaft bear- In testimony whereof, we'hereunto affix our signatures in the presenceof two wit nesses, this 16th day of Sept, 1910.

MILTON F. IVILLIAMS. EDWARD H. FRICKEY;

Witnesses:

F. R. CORNWALL, M. P. SMITH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

